Question 7
Question 7 of 40
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No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
1. Motion, forces and ene...
1.5.1. Effects of forces

Know that friction (drag) acts on an object moving through a gas (e.g. air resistance)

3. Waves
3.4. Sound

Know that the speed of sound in air is approximately 330–350m/s

4. Electricity and magnet...
4.2.4. Resistance

Recall and use the equation for resistance R = V/I